Scale.



G. H. KAlSER.

SCALE. v APPLICATION min SEPT- 25. 1915.

GEORGE HA YDf N /\A ISL R. IWQMW i. 5AM worms .rvn "our: I'EYAIS co rnomumm. uusumcnw. n c

UNITED STATES PATENT OFFICE.

GEORGE H. KAISER, OF PORTLAND, OREGON.

SCALE.

Application filed September 25, 1915.

To all whom it may concern Be it known that I, GEORGE H. KArsnn, a citizen of the United States, and a resident of Portland, in the county of Multnomah and State of Oregon, have invented certain new and useful Improvements in Scales, of which the following is a specification.

My invention is an improvement in scales, and the invention has for its object to provide a removable pivot, adjustable holder and removable bearing for scales of the character used on railroads, wherein the pivot and bearing is so arranged that it may be quickly removed for sharpening or repairs, and may be replaced by a new pivot and bearing to permit the scale to be used continuously.

In the drawings: Figure 1 is a perspective view of the improved pivot and bearing; Fig. 2 is a top plan view of the bearing; Fig. 3 is an end view of the same; Fig. 4 is an end view of the pivot, and Fig. 5 is an end view showing the bearing and the pivot in place in their holders.

As is known, with railroad track scales, the principal wear is on the pivots and the bearings. When the pivots become dull, or the bearings become out, the scale no longer weighs correctly, and it is necessary to make general repairs. The scale levers must be removed from the pit and sent to a shop, where the pivots may be sharpened or replaced by new ones. All the cut bearings are necessarily refitted. This work requires from thirty to sixty days and costs from $150 to $300. In addition, the scale is out of commission during this time. With the improved removable pivot and bearlng, wear may be compensated for. and when a pivot becomes dull, it may be removed, replaced by a new one, and the old pivot may be sent away for sharpening if necessary.

In Fig. 1, the bearing a is a bar substan tially rectangular .in cross section, having at its opposite sides and near its lower face grooves b which extend longitudinally of the bar In the under face of the bar is a longitudinal groove 0, which is adapted to engage the bearing edge, or point e of the pivot d. The pivot d is provided with the knife edge e at its top, and at opposite sides the pivot is provided with transverse grooves f and g, respectively, the grooves f being about midway the length of the pivot, while the grooves g are near the lower edge or base. The bearing is held in a 1ongitudi- Specification of Letters Patent.

Patented Dec. 5, 1916.

Serial No. 52,581.

nally extending groove it in the under face of a holder p, the said groove It being of such depth that that portion of the bea ri below the lower walls of the groove Z2 will. extend below the under face of the holder. The bearing is arranged in the groove h, w th the groove 0 at the under face, and the pivot d is held in a recess or depression 1? 1n the pivot holder (1. The pivot is held in place in the groove 1? by means of set screws the said screws 9' being threaded through inclined openings in the holder, for engagement with the grooves g of the pivot. The upper edge e of the pivot engages in the grooves c, as shown in Fig. 1, and it will. be evident that either the pivot or the bearing may be easily detached from its holder for sharpening or repairs of any character.

The loop a which supports the platform of the scale, or the weight to be weighed, passes over the holder 7) as shown in Fig. 1, and the adjustable holder 9 for the pivot is provided with depending lugs r, at the opposite sides thereof, and with other lugs s oifset inwardly from the lugs 1', for engaging the scale lever to connect the holder ;0 to the lever. Set screws Z are threaded through the lugs rand s, to engage the lever when it is in place, and each set screw is provided with a lock or 3' am nut m for preventingdisplacement of the set screw.

The holder 7) is provided with a friction guard 7.4 at each end thereof, and as many screws are used as may be necessary to hold the pivot in place. The holder (1 is also provided with openings 0, for receiving bolts, for permitting the holder to be bolted to the scale lever.

In use, the scale provided with the improved pivot and bearing operates in precisely the same manner as the usual scale. When, however, the knife edge of the pivot becomes dull, it may be removed, by turnmg the set screws j in the proper direction. A new pivot may be inserted, and the old pivot may be sent away if necessary to be sharpened. When the bearing a becomes worn, it may be easily removed from the holder 7), and a new bearing inserted.

It will be evident that with the improved pivot and bearing, the scale is out of commission only during the time necessary to remove a pivot or bearing and insert a new one. When it is desired to remove the pivot 03 it is only necessary to loosen the set screw j as above stated. When the new pivot is slipped into place the set screws are turned down until they firmly engage the grooves j. This will hold the pivot in place and now, with a blow of the cold chisel or swaging tool the metal of the adjustable holder q is swaged down into the groove f at each side of the pivot. This will hold the pivot securely in place,- and should it be found after the pivot has been fastened in the holder, that it is not in alinenoent or gage with the other pivot, all that is necessary is to loosen the bolts on the holder at 0 and then with the adjusting screw Z the pivot can be brought into perfect Thus the holder 9 for the pivot is made adjustable laterally with respect to the scale lever. The set screws j hold the pivot temporarily, prior to the swaging of the same. It will. be understood that in all track scale levers there are three or four pivots which must all be parallel with each other and the proper distance apart, that is, the knife edges of the pivots must be in register or in alinement. The grooves b of the bearing are also for receiving the swaged side walls of the groove 7t, to hold the bearing in place.

I claim:

1. In a scale, removable pivots and bearings, each bearing having a groove in its under face and each pivot having a knife edge for engaging the groove of the bearing, a holder for the bearing having a groove in its under face, the bearing fitting the groove and being of depth to extend beyond the groove, the pivot holder having a longitudinally extending groove in its upper face, and the pivot being of a depth to extend beyond the groove, the side walls of the grooves of the holders being adapted .to be swaged against the pivot and the bearing to hold theni in place, and said pivot and bearing having longitudinally extending grooves for receivi the swaged walls, releasable means for holding the pivot in place, said means comprising set screws threaded through the walls groove, and the pivot having grooves in its side walls for engagement by the set screws, the holder for the pivot having icons for engaging the scale lever, and being austable laterally with respect to the lever, said adjusting means comprising depending lugs on the holder for engaging the opposite sides of the lever, and set screws threaded through the lugs.

2. In a scale, removable pivots and bear ings, each bearing having a groove in its under face and each pivot having a knife edge for engaging the groove of the bear-in av holder for the bearing having a. groove in its under face, the bearing fitting the groove and being of a depth to extend beyond the groove, the pivot holder having a longitudi- Copies of this patent may be obtained for nally extending groove in its upper face, and the pivot being of a depth to extend beyond the groove, the side walls of the grooves of the holders being adapted to be swaged against the pivot and the bearing to hold them in place, and said pivot and hearing having longitudinally extending grooves for receiving the swaged walls, releasable means for holding the pivot in place, said means comprising set screws threaded through the walls of the groove, and the pivot having grooves in its side walls, for engagement by the set screws.

3. In a scale, removable pivots and bearings, each bearing having a groove in its under face and each pivot having a knife edge for engaging the groove of the bearing, a holder for the bearing having a groove in its under face, the bearing fitting the groove and heir; of a depth to GXSIlCl beyond the groove, the pivot holder having a longitudinally extending groove in its upper face, and the pivot being of a. depth to extend be yond the groove, the side walls of the grooves of the holders being adapted to be swaged against the pivot and the bearing to hold them in place, and said pivot and bearing having longitudinally extending grooves for receiving the swaged walls, and releasable means for holding the pivot in place.

4:. In a scale, removable pivots and bearings, each bearing having a groove in its under face and each pivot having a knife edge for engaging the groove of the bearing, a holder for the bearing having a groove in its under face, the bearing fittin the groove and being of a depth to extend beyond the groove, the pivot holder having a longitudinally extending groove in its upper face, and t ie pivot being of a depth to extend be yond the groove, the side walls of the grooves of the holders being adapted to be swaged against the pivot and the bearing to hold them in place, and said pivot and bearing having longitudinally extending grooves for receiving the swaged walls.

In a scale removable pivots and bearings. a holder for each pivot and bearing, the holders having grooves in which the pivots and bearings are releasably held to permit said pivots and hearings to be re moved and replaced, the side walls of the grooves of the holders being adapted to be swaged against the pivot and the bearing to hold them in place, said pivot and bearing having longitudinally extending grooves for receiving the swaged walls.

GEORGE H. KAISER.

Witnesses W. T. SLATER, BARGE E. LEONARD.

five cents each, by addressing the Gomrnissioner of Patents. Washihgtoml). G. 

